Omega
seamaster 300 vintage 165.014 - diver icon

Omega Seamaster 300 – Reference 165.014 – Stainless Steel, Circa 1966

“Built for the abyss, engineered for exploration.”

Beneath the quiet surface of a matte black dial lies the soul of a mission-driven instrument, crafted to withstand the pressure of the deep and the unknown. The Seamaster 300, reference 165.014, embodies the essence of the professional dive watch of the 1960s. Produced between 1962 and 1966, it stands as a milestone in Omega’s history—a model revered for its technical ingenuity and real-world utility.

A professional tool for deep-sea challenges

Launched during a time when underwater exploration was rapidly expanding—from oceanographic missions to military commando operations—the Seamaster 300 165.014 was designed for professionals. It was notably worn by units of the Royal Navy, a testament to its reliability, durability, and exceptional legibility under extreme conditions.

Its 39 mm asymmetric monobloc stainless steel case is built for resilience, with thick lugs and angled flanks that protect the screw-down crown. The caseback is engraved with Omega’s iconic hippocampus, the emblem of the Seamaster line and a lasting symbol of the brand’s maritime legacy.

A dial made for the mission

The matte black dial is stripped of unnecessary decoration, designed solely for readability. Applied tritium hour markers in relief, a precise minute track, bold white broad arrow hands, and a central lollipop seconds hand ensure instant legibility. A bidirectional rotating bezel in bakelite, with raised luminous markers, allows for precise immersion timing. The domed Hésalite crystal adds to the visual depth and period authenticity of the watch.

The movement: Caliber 552, Swiss precision at its best

Inside the Seamaster 300 beats the Omega caliber 552, one of the brand’s most reliable automatic movements of the era. This no-date movement features 24 jewels, operates at 19,800 vibrations per hour, and offers a power reserve of over 48 hours. Designed and assembled entirely in Biel/Bienne, Switzerland, it reflects the uncompromising mechanical precision that has allowed it to perform flawlessly in both civilian and military contexts.

A timepiece turned icon

Reference 165.014 is the last model to feature the straight-lug case design before Omega transitioned to lyre lugs. Its rarity, combined with a rugged and purposeful aesthetic, makes it one of the most sought-after versions among vintage dive watch collectors. Its understated yet commanding design continues to inspire modern reissues—a testament to its enduring legacy.

The Mostra guarantee

The Seamaster 300 reference 165.014 offered by Mostra Store has been carefully inspected, serviced, and authenticated in our workshop in Aix-en-Provence. Delivered ready to wear, it comes fitted with your choice of a NATO or leather strap, preserving its military DNA while offering contemporary comfort. Backed by a 3-year warranty, it reflects our commitment to quality and trust.

A watch of commitment, a piece of history

Owning this 1966 Omega Seamaster 300 is about more than just timekeeping—it’s about embracing the pioneering spirit of deep-sea divers, explorers, and covert operatives. It is a living embodiment of craftsmanship, performance, and utilitarian beauty. More than a watch, it is a witness to the unbreakable bond between man and the sea.

Available now at Mostra Store – For those who measure depth, not just time.